//public class MyArrayList implements Array{
   /* private int[] elem;
    private int usedSize = 0;
    private static final int DEFAULT_SIZE = 4;
    public MyArrayList(){
        this.elem = new int[DEFAULT_SIZE];
    }

    //@Override
    public boolean isEmpty() {
        if(usedSize == 0) {
            return true;
        }
        return false;
    }*/

    //@Override
    /*public boolean isFull() {
        if(elem.length == usedSize) {
            return true;
        }
    }*/

   // @Override
    //public void addFirst(int value) {
        //判断数组是否满了
        //if()
        //判断数组是否为空*/
        /*if(isEmpty()) {
            elem[0] = value;
            usedSize++;
        } else {

        }
    }
}*/
